Get the difference between the two lists

Get the difference between the two lists.

L1 = [1, 2, 3, 4]
L2 = [1, 2]

print(list(set(L1) - set(L2)))    # [3, 4]

See also

https://www.w3resource.com/python-exercises/list/python-data-type-list-exercise-19.php